search for: mount_pseudo

...text() helper function for doing most of the work in mounting a pseudo filesystem. (3) Converts all the trivial filesystems that have no arguments to fs_context. (4) Converts binderfs (which was trivial before January). (5) Converts ramfs, tmpfs, rootfs and devtmpfs. (6) Kills off mount_pseudo(), mount_pseudo_xattr(), mount_ns(), sget_userns(). The patches can be found here also: https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git on branch: mount-api-viro David --- David Howells (38): vfs: Provide sb->s_iflags settings in fs_context struct vf...

...work in setting up a block-based superblock. (4) Improves the handling of fd-type parameters. (5) Moves some of the subtype handling int fuse. (6) Provides a convenience helper function, vfs_get_mtd_super(), for doing the work in setting up an MTD device-based superblock. (7) Kills off mount_pseudo(), mount_pseudo_xattr(), mount_ns(), sget_userns(), mount_mtd(), mount_single(). (8) Converts a slew of filesystems to use the mount API. (9) Fixes a bug in hypfs. The patches can be found here also: https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git on branch: mou...

...unting" takes this: static struct dentry *aio_mount(struct file_system_type *fs_type, int flags, const char *dev_name, void *data) { static const struct dentry_operations ops = { .d_dname = simple_dname, }; return mount_pseudo(fs_type, "aio:", NULL, &ops, AIO_RING_MAGIC); } and static struct file_system_type aio_fs = { .name = "aio", .mount = aio_mount, .kill_sb = kill_anon_super, }; aio_mnt = kern_mo...

...unting" takes this: static struct dentry *aio_mount(struct file_system_type *fs_type, int flags, const char *dev_name, void *data) { static const struct dentry_operations ops = { .d_dname = simple_dname, }; return mount_pseudo(fs_type, "aio:", NULL, &ops, AIO_RING_MAGIC); } and static struct file_system_type aio_fs = { .name = "aio", .mount = aio_mount, .kill_sb = kill_anon_super, }; aio_mnt = kern_mo...

...irtio_balloon_stat stats[VIRTIO_BALLOON_S_NR]; + + /* The last page offset read into the mapping's page_tree */ + unsigned long last_scan_page_array; + + /* The last time a page was reclaimed */ + unsigned long last_reclaim; +}; + +/* Magic number used for the skeleton filesystem in the call to mount_pseudo */ +#define BALLOONFS_MAGIC 0x42414c4c + +static struct virtio_device_id id_table[] = { + { VIRTIO_ID_FILE_BALLOON, VIRTIO_DEV_ANY_ID }, + { 0 }, +}; + +/* + * The skeleton filesystem contains a single inode, held by the structure below. + * Using the containing structure below allows easy access t...

...irtio_balloon_stat stats[VIRTIO_BALLOON_S_NR]; + + /* The last page offset read into the mapping's page_tree */ + unsigned long last_scan_page_array; + + /* The last time a page was reclaimed */ + unsigned long last_reclaim; +}; + +/* Magic number used for the skeleton filesystem in the call to mount_pseudo */ +#define BALLOONFS_MAGIC 0x42414c4c + +static struct virtio_device_id id_table[] = { + { VIRTIO_ID_FILE_BALLOON, VIRTIO_DEV_ANY_ID }, + { 0 }, +}; + +/* + * The skeleton filesystem contains a single inode, held by the structure below. + * Using the containing structure below allows easy access t...

...ee */ > >> + unsigned long last_scan_page_array; > >> + > >> + /* The last time a page was reclaimed */ > >> + unsigned long last_reclaim; > >> +}; > >> + > >> +/* Magic number used for the skeleton filesystem in the call to mount_pseudo */ > >> +#define BALLOONFS_MAGIC 0x42414c4c > >> + > >> +static struct virtio_device_id id_table[] = { > >> + { VIRTIO_ID_FILE_BALLOON, VIRTIO_DEV_ANY_ID }, > >> + { 0 }, > >> +}; > >> + > >> +/* > >> + * The s...

...ee */ > >> + unsigned long last_scan_page_array; > >> + > >> + /* The last time a page was reclaimed */ > >> + unsigned long last_reclaim; > >> +}; > >> + > >> +/* Magic number used for the skeleton filesystem in the call to mount_pseudo */ > >> +#define BALLOONFS_MAGIC 0x42414c4c > >> + > >> +static struct virtio_device_id id_table[] = { > >> + { VIRTIO_ID_FILE_BALLOON, VIRTIO_DEV_ANY_ID }, > >> + { 0 }, > >> +}; > >> + > >> +/* > >> + * The s...

...ic const struct super_operations btrfs_test_super_ops = { + .alloc_inode = btrfs_alloc_inode, + .destroy_inode = btrfs_test_destroy_inode, +}; + static struct dentry *btrfs_test_mount(struct file_system_type *fs_type, int flags, const char *dev_name, void *data) { - return mount_pseudo(fs_type, "btrfs_test:", NULL, NULL, BTRFS_TEST_MAGIC); + return mount_pseudo(fs_type, "btrfs_test:", &btrfs_test_super_ops, + NULL, BTRFS_TEST_MAGIC); } static struct file_system_type test_type = { diff --git a/fs/btrfs/tests/btrfs-tests.h b/fs/btrfs/tests/btrfs-te...

...igratepage(struct balloon_dev_info *vb_dev_info, return MIGRATEPAGE_SUCCESS; } + +static struct dentry *balloon_mount(struct file_system_type *fs_type, + int flags, const char *dev_name, void *data) +{ + static const struct dentry_operations ops = { + .d_dname = simple_dname, + }; + + return mount_pseudo(fs_type, "balloon-kvm:", NULL, &ops, + BALLOON_KVM_MAGIC); +} + +static struct file_system_type balloon_fs = { + .name = "balloon-kvm", + .mount = balloon_mount, + .kill_sb = kill_anon_super, +}; + #endif /* CONFIG_BALLOON_COMPACTION */ stati...

..._page(page); /* balloon reference */ - return MIGRATEPAGE_SUCCESS; + return 0; } + +static struct dentry *balloon_mount(struct file_system_type *fs_type, + int flags, const char *dev_name, void *data) +{ + static const struct dentry_operations ops = { + .d_dname = simple_dname, + }; + + return mount_pseudo(fs_type, "balloon-kvm:", NULL, &ops, + BALLOON_KVM_MAGIC); +} + +static struct file_system_type balloon_fs = { + .name = "balloon-kvm", + .mount = balloon_mount, + .kill_sb = kill_anon_super, +}; + #endif /* CONFIG_BALLOON_COMPACTION */ stati...

...page); put_page(page); /* balloon reference */ return MIGRATEPAGE_SUCCESS; } + +static struct dentry *balloon_mount(struct file_system_type *fs_type, + int flags, const char *dev_name, void *data) +{ + static const struct dentry_operations ops = { + .d_dname = simple_dname, + }; + + return mount_pseudo(fs_type, "balloon-kvm:", NULL, &ops, + BALLOON_KVM_MAGIC); +} + +static struct file_system_type balloon_fs = { + .name = "balloon-kvm", + .mount = balloon_mount, + .kill_sb = kill_anon_super, +}; + #endif /* CONFIG_BALLOON_COMPACTION */ stati...

...page); put_page(page); /* balloon reference */ return MIGRATEPAGE_SUCCESS; } + +static struct dentry *balloon_mount(struct file_system_type *fs_type, + int flags, const char *dev_name, void *data) +{ + static const struct dentry_operations ops = { + .d_dname = simple_dname, + }; + + return mount_pseudo(fs_type, "balloon-kvm:", NULL, &ops, + BALLOON_KVM_MAGIC); +} + +static struct file_system_type balloon_fs = { + .name = "balloon-kvm", + .mount = balloon_mount, + .kill_sb = kill_anon_super, +}; + #endif /* CONFIG_BALLOON_COMPACTION */ stati...

So both Liu and I made huge messes of find_lock_delalloc_range trying to fix stuff, me first by fixing extent size, then him by fixing something I broke and then me again telling him to fix it a different way. So this is obviously a candidate for some testing. This patch adds a pseudo fs so we can allocate fake inodes for tests that need an inode or pages. Then it addes a bunch of tests to make

Hi Minchan, [auto build test ERROR on next-20160318] [cannot apply to v4.5-rc7 v4.5-rc6 v4.5-rc5 v4.5] [if your patch is applied to the wrong git tree, please drop us a note to help improving the system] url: https://github.com/0day-ci/linux/commits/Minchan-Kim/Support-non-lru-page-migration/20160321-143339 config: x86_64-randconfig-x000-201612 (attached as .config) reproduce: # save

Hi Minchan, [auto build test ERROR on next-20160318] [cannot apply to v4.5-rc7 v4.5-rc6 v4.5-rc5 v4.5] [if your patch is applied to the wrong git tree, please drop us a note to help improving the system] url: https://github.com/0day-ci/linux/commits/Minchan-Kim/Support-non-lru-page-migration/20160321-143339 config: x86_64-randconfig-x000-201612 (attached as .config) reproduce: # save

VMware balloon enhancements: adding support for memory compaction, memory shrinker (to prevent OOM) and splitting of refused pages to prevent recurring inflations. Patches 1-2: Support for compaction Patch 3: Support for memory shrinker - disabled by default Patch 4: Split refused pages to improve performance v3->v4: * "get around to" comment [Michael] * Put list_add under page lock

VMware balloon enhancements: adding support for memory compaction, memory shrinker (to prevent OOM) and splitting of refused pages to prevent recurring inflations. Patches 1-2: Support for compaction Patch 3: Support for memory shrinker - disabled by default Patch 4: Split refused pages to improve performance v3->v4: * "get around to" comment [Michael] * Put list_add under page lock

VMware balloon enhancements: adding support for memory compaction, memory shrinker (to prevent OOM) and splitting of refused pages to prevent recurring inflations. Patches 1-2: Support for compaction Patch 3: Support for memory shrinker - disabled by default Patch 4: Split refused pages to improve performance v2->v3: * Fixing wrong argument type (int->size_t) [Michael] * Fixing a comment

Recently, I got many reports about perfermance degradation in embedded system(Android mobile phone, webOS TV and so on) and easy fork fail. The problem was fragmentation caused by zram and GPU driver mainly. With memory pressure, their pages were spread out all of pageblock and it cannot be migrated with current compaction algorithm which supports only LRU pages. In the end, compaction cannot